1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zarrin [17]
2 years ago
5

if tom spins the spinner 80 times work out an estimate for the number of times the spinner will land on 3 please help me

Mathematics
1 answer:
NNADVOKAT [17]2 years ago
7 0

Answer:

The estimated number of times the spinner will land on 3 is 20.

Step-by-step explanation:

The complete question is:

A four-sided spinner is provided. If Tom spins the spinner 80 times then work out an estimate for the number of times the spinner will land on 3.

Solution:

Assume that the four-sided spinner is unbiased.

That is all the four outcomes are equally likely to be selected.

The probability that the spinner lands on any of the four numbers is:

P(1) = P (2) = P (3) = P (4) = 0.25

It is provided that Tom spins the spinner <em>n</em> = 80 times.

The spinner can land on any of the four numbers independently.

The random variable <em>X</em>, defined as the number of times the spinner lands on 3, follows a Binomial distribution with parameters <em>n</em> = 80 and <em>p</em> = 0.25.

The expected value of <em>X</em> is:

E(X)=np

        =80\times 0.25\\=20

Thus, the estimated number of times the spinner will land on 3 is 20.

You might be interested in
Which equation could have been used to create this graph?
Mekhanik [1.2K]
B.) y=3x
The slope of a given line is defined by <em>y=mx+b</em>, where b is the y-intercept (the point at which the line crosses the y-axis) and m is the slope (rise/run). We see that the y-intercept is 0 (because the line hits the y-axis at 0) and the slope is 3 (rise=3 and run=1, so 3/1=3).

:)
5 0
3 years ago
Read 2 more answers
Express 4 cm as a fraction of 2 m
Amanda [17]
2m = 200cm

4/200

divide both sides by 4:
1/50


Hope this helps ^-^
3 0
3 years ago
Helppppppppppppppppp pleaseeeeeeeeeeee​
alexandr1967 [171]
Greater than 6 it’s labeled as 1 through 6 a fair dice has a probability of 16
4 0
2 years ago
If r=0.5 and a6=0.03125 what is the value of a1?
andre [41]

I guess this is a geometric series:

a6 = a1 * r^5 so

a1 =  0.03125 / 0.5^5

=  1    answer

5 0
3 years ago
Read 2 more answers
Why does the equation 3x+7=-3x+2+6x have no solution?
ale4655 [162]
3x+7=3x+2 (cancel equal terms)
7=2 ( the statement is false)
5 0
3 years ago
Other questions:
  • Sophia wrote an equation to represent the revenue of a movie theater for one day. She let x represent the number of child ticket
    12·1 answer
  • Write the phrase as an algebraic expression. 6 less than a number times 11.
    12·2 answers
  • Factor the polynomial by its greatest common monomial factor.
    10·1 answer
  • The robotics team needs to purchase $350 of new equipment. Each of the x students on the team plans to fundraise and contribute
    8·1 answer
  • Solving systems of equations has been used consistently throughout this course in order to shed light on all kinds of different
    6·1 answer
  • Find the difference.<br> 10 - 14
    10·1 answer
  • HELP PLEEEASE DUE TODAY ALL MY POINTS<br><br> if ΔABC and ΔXYZ are similar which must be true
    14·2 answers
  • Corey and Margaret went scuba diving in the ocean together. Corey dove to a depth of -23 feet, while Margaret dove to a depth of
    7·1 answer
  • Solve the following:<br><img src="https://tex.z-dn.net/?f=4x%20%2B%203%20%3D%207" id="TexFormula1" title="4x + 3 = 7" alt="4x +
    15·2 answers
  • 5/8 plus2/5 simplest form​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!